<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			* {
				margin: 0;
				padding: 0;
			}

			.top {
				height: 80px;
				border: 1px solid orange;
			}

			.banner {
				height: 180px;
				border: 1px solid #ff00ff;
				margin: 20px auto;
				width: 1200px;
			}

			.items {
				border: 1px solid #ddff00;
				width: 1200px;
				margin: 20px auto;
			}

			li {
				list-style: none;
			}

			.items ul li {
				width: 24%;
				height: 300px;
				background-color: aquamarine;
				float: left;
				margin-left: 5px;
			}

			.banner div {
				float: left;
			}

			.banner .d1 {
				background-color: green;
				width: 30%;
				height: 100%;
			}

			.banner .d2 {
				background-color: orange;
				width: 70%;
				height: 100%;
			}
			
			.footer {
				height: 100px;
				background-color: rebeccapurple;
			}
			
			.clearfix::after {
				content: "";
				display: block;
				height: 0;
				clear: both;
				visibility: hidden;
			}
		</style>
	</head>
	<body>
		<div class="top"></div>
		<div class="banner">
			<div class="d1">1</div>
			<div class="d2">2</div>
		</div>
		<div class="items clearfix">
			<ul>
				<li>1</li>
				<li>2</li>
				<li>3</li>
				<li>4</li>
			</ul>
		</div>
		<div class="footer"></div>
	</body>
</html>
